A New Analysis Model for IEEE 802.15.4 MAC with Heterogeneous Unsaturated Conditions

摘要：

Since the successful release of IEEE 802.15.4 standard, a great convenience is offered to applications in low-power and low-rate wireless sensor networks (WSNs). In this work, a novel CSMA/CA scheme which can be modeled as a renewal process for a node access process and a semi-Markov chain for the macroscopic channel transition process is proposed to analyze and improve the behaviors of heterogeneous unsaturated networks. General performance metrics such as throughput, access delay are predicted through these models. Moreover, performance comparisons of our scheme with other non-priority heterogeneous schemes are presented. Comprehensive analyses and simulations show that the fairness and delay of our scheme are superior to those of other schemes, while throughput is superior to others in more heterogeneous conditions.

关键词： WSNs CSMA/CA renewal process heterogeneous networks NS-2

作者: Chunfeng Lv Jianping Zhu Jianping Zhu

作者单位: Dept. of Electronic, Information and Electrical Engineering Shanghai Jiaotong University Shanghai, C Dept. of Electrical and Information Technology Yunnan University of Nationalities Kunming, China

会议类型: 国际会议

会议名称: 2012 International Conference on Measurement,Information and Control(2012测量、信息与控制国际会议 ICMIC2012)

会议地点: 哈尔滨

会议语种:英文

页码: 92-97

在线出版日期: 2012-05-18（万方平台首次上网日期，不代表论文的发表时间）